P.B.X.交換統計のとり方
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国立国会図書館デジタルコレクション
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Table of Contents
目次
1 呼
p1
(1) 呼の意義
p1
(2) 呼の発生と交換
p1
(3) 総呼数、最繁時呼数
p2
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- Material Type
- 図書
- Title
- Title Transcription
- P B X コウカン トウケイ ノ トリカタ
- Author/Editor
- 電気通信省業務局 編
- Author Heading
- 電気通信省業務局 デンキ ツウシンショウ ギョウムキョク ( 00785897 )Authorities
- Publication, Distribution, etc.
- Publication Date
- 1952
- Publication Date (W3CDTF)
- 1952
- Extent
- 26p
- Size
- 21cm